Top-rated energy efficiency auditors.

Get matched with top energy efficiency auditors in Downey, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your energy efficiency auditing project in Downey, CA?

Select your specific project to find the pro for you.

Find Energy efficiency auditors in Downey

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"They replaced our old furnace with a modern, energy-efficient model. The installation was clean and hassle-free. Highly satisfied with the improved performance. The new system has already lowered our energy bills."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

Response time3 days
7 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
10
)
Home Energy Audit

Serving Downey, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it!\n\nWe offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

After: brand new furnace with industrial grade filtration system. Re-wrapped ductwork with fiberglass free wrapping and acoustic soundproof closet/return cavity.
After: 2 Stage Variable Speed Furnace installed perfectly!
After: Properly sized, energy efficient, and installed to code.
Before: Homeowner had tried multiple times to get the pilot light ignited.
Before: Old furnace not installed to code.

+31

3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Insulation Nation, LLC
Insulation Nation, LLC
5.0(
7
)
Home Energy Audit

Serving Downey, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Hi there from Dustin, owner of Insulation Nation! \n\nWhat's most important to you in a contractor? \n\nPrice? \nCommunication?\nEducation?\nAccountability?\nQuality of Outcome?\n\nMost people would think "All of the above!". Great news - as the owner of the company, I am available to you at every step of the process, supported by our great Project Managers. I see the finished work of every project we complete, and your satisfaction comes before all else.\n\nGive us a call 949-773-6444!\n\nThank you!\nDustin Dean\n\nC-02 Insulation and Acoustic\n#: 1127373\nEXP: 10/31/2026

Air Seal (Mineral wool light covers) and Batt - R38 Attic
Vaulted/Cathedral Ceiling - R43 Combo of RIgid Foam Board and Batt
Same
Full Removal, Radiant Barrier and Replacment
Batt Insulation In Attic Perpendicular Layered

+33

71 neighbors recently requested a quote
Recommended by14%of homeowners
Solar Energy License Not Yet Provided
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

Empowered Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.\n

Response time40 mins
Avatar for JO Solar Designs
JO Solar Designs
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

Approved

In business since 2018

Free estimates

Offers commercial services

JO Solar Designs is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Response time2 days
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"We recently had Mega Power Electric Inc install a solar system and panels. The President and provided excellent communication all the way through the process. He even met with us after installation to explain the almost incomprehensible PG&E bill. Although not the least expensive bid, his was competitive and I felt he was as interested in educating me about solar and the various types of panels and inverter systems as he was in selling a system. He demonstrated how the array of panels would meet our energy needs and as opposed to some of the other companies, wasn't selling us more than we needed. We are very satisfied with our solar system and I highly recommended Mega Power Electric Inc."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+32

Recommended by100%of homeowners
Avatar for Excellence Electric
Excellence Electric
4.8(
292
)
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Raymond was very professional and knowledgeable, and reflects his Master Electrician license .  His price was the best of 3 quotes I got.   His work was excellent, with great rapid communication,. He was on time and got the work done quickly.  He was able to set up the 240V line and outlet to charge my current ford fusion energi car, and be ready to charge the Tesla car if I decide to buy one in the future.  Reassuring that he has adequate insurance coverage for any work he does.  I will hire him again for any  future electric work I need done. I am glad to have found a professional, reliable electrician for my current and future needs.
"
Electrical Project
Electrical Project
Electrical Project
Electrical Project
Electrical Project

+18

Response time2 days
Recommended by98%of homeowners
Avatar for SunRun LLC
SunRun LLC
5.0(
12
)
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

In business since 2007

Free estimates

California homeowners can receive fully funded solar at no cost and begin paying less on your electricity bills per month. No purchase of equipment, no permit fees, no install fees and no liability of the system. Begin receiving your energy with the nation's leading residential solar provider since 2007, rated A+ on BBB for 19 years! For a limited time, as a thank you, following install SunRun will pay you $1,000 cash!\nSunRun has been lowering electric costs for homeowners across the nation since 2007. SunRun offers a no purchase solar option for customers. The system is owned, maintained, monitored and insured by SunRun so the customer's experience is hassle free. Start receiving electricity at a low, set rate per month, lower than your local utility provider, with rate protection. Following install, get $1,000 dollars cash, as a thank you from SunRun. Perhaps you don’t like the idea of an expensive purchase, but you like the idea of cheaper electricity bills for 300 months. That’s 25 years. SunRun has been providing communities around the nation with renewable sources of energy and top notch quality customer service with an A+ Better Business Bureau (BBB) rating since 2007. If it's a new home, old home, house or condo, we've got you covered! SunRun believes in a planet run by the sun. Together, we are creating a sustainable future where everyone can access power they need, when they need. When you make the switch to SunRun, the benefits of solar are pretty clear. We give you the power right back at a reduced, set rate per kilowatt-hour, lower than your local electricity provider.\n\n*Power Purchase Agreement (PPA)- Monthly Low Flat Rate For Electricity\nNo Purchase. No Down Payment. No Loan or Lease Required.\nBegin saving on your monthly electricity charges. Receive your energy at a set rate, lower than the local utility provider. No additional fees, no penalty rates, no tier or time of use structure. Use your energy freely.\n

Install!
Start saving on electric charges
Install in San Diego
Wonder What We Do??
Additional Photos

+8

Recommended by100%of homeowners
Avatar for Green Source Energy INC.
Green Source Energy INC.
4.7(
42
)
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"We purchased the home energy audit with the understanding that we would be receiving a more extensive analysis of our home energy usage along with possible solutions. Ultimately, the process was more about a presentation for solar panels that anything else, which was not what we were looking for when we purchased the offer. Richard was very professional and thorough in his presentation and presented options regarding areas to save in terms of energy usage but those areas were not as thoroughly explored as the solar discussion. Green Source Energy should be more direct about what the Home Energy Audit entails so buyers can make an informed decision."
Recommended by91%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)
Energy Audit - For BusinessHome Energy Audit

Serving Downey, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"The reviews below me said it best: Ezra was fantastic! He was prompt, professional, and very informative. He explained to me each of the things he was doing, what he looked for in an audit, and what to expect. He also answered all of my questions about the kind of improvements that were worth it and those that were a waste of money. We were required to have an Energy Audit to sell our home and our realtor recommended Ezra from Landmark construction & energy crew. Lucky for us, Ezra found no recommendations and gave us a good "bill of health." What I like more is that if he does have recommendations, he doesn't perform any work himself, providing a truly unbiased opinion.  I fully plan on having Ezra perform an audit of our next home, whether it is required or not."
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
...
Showing 1-10 of 85
Energy Efficiency Auditing questions, answered by experts

Yes, advising on models that save electricity and reduce utility bills.

Setting your AC unit to 78 degrees can, indeed, help you save energy. In fact, according to experts, every degree you turn the unit up could save you between 1% and 3% on your energy bills. That said, turning your unit off entirely while you’re out might actually be less efficient than keeping it on at a higher temperature. Why? The unit will need to work extra hard to cool the house back off again after all those hot hours. 

Yes, skylights can affect a home’s energy efficiency, either positively or negatively. Properly installed, energy-efficient skylights with Low-E coatings, double glazing, and UV-blocking glass can help regulate indoor temperatures and reduce heating and cooling costs. However, poorly insulated or older skylights can contribute to heat loss in winter and excess heat gain in summer, lowering overall energy efficiency.

It’s not recommended to turn off your breaker box in hopes of saving electricity. Breaker boxes were not designed to constantly be switched on and off. Therefore, turning off breakers unnecessarily can cause costly damage that outnumbers any energy savings. Only flip your breakers if absolutely necessary when troubleshooting an electrical issue.

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

The Downey, CA homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.